642443147610 has 64 divisors (see below), whose sum is σ = 1682876974464. Its totient is φ = 155665644800.

The previous prime is 642443147609. The next prime is 642443147629. The reversal of 642443147610 is 16741344246.

It is a super-2 number, since 2×642443147610² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171580 + ... + 1146440.

It is an arithmetic number, because the mean of its divisors is an integer number (26294952726).

Almost surely, 2^642443147610 is an apocalyptic number.

642443147610 is an abundant number, since it is smaller than the sum of its proper divisors (1040433826854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642443147610 is a wasteful number, since it uses less digits than its factorization.

642443147610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976879.

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 642443147610 in words is "six hundred forty-two billion, four hundred forty-three million, one hundred forty-seven thousand, six hundred ten".